needham



(NoModeL) G. A. NBBDHAM.

CLAMP FOR MANIPULATINGVPHOTOGRAPHIG PLATBS.. No. 306,635. Patented Oct. 14, 1884.

UNITED STATES PATENT OFFICE.

CHARLES A. NEEDHAM,-'OF NEW YORK, N. Y., ASSIGNOR TO E. P. NEEDHAM & SON, OF SAME PLACE.

CLAMP FOR MANIPULATING PHOTOGRAPHIC PLA TES.

SPECIFICATION forming part of Letters Patent No. 306,635, dated October 14, 1884.

Application filed April 10, 1884.

To all whom it may concern:

Be it known that I, CHARLES A. NEEDHAM, of New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Clamps for Use in Manipulating Photographic Plates in Developing them, of which the following is a specification.

The object of this improvement is to provide a clamp simple in construction, easy to operate, and withal suitable for grasping a photographic plate, and serving as a handle Whereby'the plate may be manipulated in developing it without the operator getting his hands in the chemicals which are used for de veloping the plate.

In the accompanying drawings, Figure 1 is an edge View of a clamp embodying my improvement, and aplate to which it is applied. Fig. 2 is a side view of this clamp. Fig. 3 is an edge view of a clamp of modified form embodying the improvement, and a plate to which it is applied. Fig. 4 is a side view of this clamp, and Fig. 5 is an edge view of another clamp embodying my improvement.

Similar letters of reference designate corresponding parts in all the figures.

Referring first to Figs. 1 and 2, A designates a photographic plate, and B designates a clamp applied thereto. This clamp consists of a piece of resilient metalsuch, for instance, as

sheet-brass-bent double at about the middle,

' and having the ends bent to form two jaws, a

b, one above the other. The jaws are rounded at the ends, so that they may easily be slipped (No model.)

over the edge of a photographic plate. The doubled portion will then serve as a handle, by grasping which the plate may be raised or lowered.

In Figs. 3 and 4 is shown a clamp B, which 0 may be made of a similar strip of metal. It is doubled to form two jaws, to 7), adapted to grasp the edge of a photographic plate, and one end is bent upward above the jaw b so as to form ahandle.

In Fig. 5 I have shown a clamp which is very similar to the one shown in Figs. 1 and 2, the principal difference being that it has an outwardly-bent portion, f, where the strip of which it is formed is doubled. This outwardly-bent portion forms a handle.

What I claim as my invention, and desire to secure by Letters Patent, is

A device for manipulating a photographic plate, consisting of an approximately-straight portion, B, a portion, b, near one end of said straight portion, extending transversely thereto, and a portion, a, extending from said I straight portion downward toward the portion 1), so as to nearly meet the same, and forming therewith a' narrow opening through which a photographic plate may be slid sidewise or edgewise, the side edges of the device being in approximately the same plane, substantially as specified.

CHAS. A. NEEDHAM.

\Vitnesses:

T. .T. KEANE, WM. G. LIrsEY. 

